Improvement in mechanical movements



2Sheets--Sheet1'.v .l. ARMSTRGNG.

Mechanical Movements.

N0. 142,365. PatentedSeptembr2,1873.

2 Sheets--Sheet 2. l. ARMSTRUNG.

Mechanical Movements.

No. 142,365, Patented Sgpt ember2,1873.

UNITED STA'r s PATENT OFFICE.

JAMES ARMSTRONG,OF TOLEDO, OHIO.

' IMPROVEMENT IN MECHANICAL MOVEMENTS.

Specification forming part of Letters Patent No. 142,365, datedSeptember 2, 1873 application filed August 21, 1873.

To all whom it may concern:

3 is aplan view, Fig. 4 an elevation, and Fig.

5 a top view, of details of the machine; and Fig. 6, a vertical sectionthrough the main shaft on the line as w of Fig. 1.

A spur-pinion, A, driven in any suitable manner, is mounted on a shaft,a, supported securely in uprights of a strong frame, B. This piniondrives a corresponding pinion, G, mounted on a sleeve, 0, secured inproper position by a set-screw upon a pipe-box, D, fitted upon astationary central shaft, E, which is securely mounted in the frame B.By means of the sliding sleeve and set-screw the pinion G can readily beremoved. Upon the pipebox D are fixed two pulleys, F F, so as to .turnwith the pinion 0 upon the stationary shaft E. Adjoining thepulley F isa stationaryzpinion, G, firmly fixed upon the central shaft. Atransmitting-wheel, H, is mounted loosely upon the central shaft E closeto the fixed pinion G. This wheel is provided with an internally-gearedflange, 9, its teeth corresponding with those of pinion G. A frame, I,is mounted loosely on the central shaft. This frame preferably embracesor incloses the pulley F and pinion G, and carries a pinion, J, in thisinstance corresponding in size with the fast pinion G. This pinion Jmeshes with the pinion G and with the wheel H. A pulley, J, is fast onthe same shaft j with the pinion J. A bracket, K, secured to the frame Icarries a pulley, k.

It'will be seen that as the pinion Arevolves motion is communicated tothe pinion G and to the pulleys F F. A belt, fipassing from the pulley Fto the pulley J and around the pulley Ir, communicates motion to thepinion J, which is thus revolved twice onits axis for every revolutionaround the central shaft. As the pulleys F, F, and J, the power from thefirst of which is communicated through the second to the third, are allof the same size, there is no loss of power, as it is communicated tothe surface of each at an equal distance from its center.

In Figs. 2 and 3 I have shown a belt passing from the pulley N on thepipe-box to a loose pulley, 0, corresponding with the pulley 7c, andanother belt passing from this pulley to another-pulley, P,corresponding with the pulley J, which is fast on the same shaft withthe friction-pulley Q, corresponding with the pinion J. The tworevolutions only of thepinion J on its own axis are caused by means ofthe bodily movement of the pinion and its frame around the centralshaft, and by the fixed pinion G, with which it engages.

It is obvious that as the pinion J, in its rev olution, describes acircle three times the diameter of the pulley F, it should revolve threetimes on its own axis for every revolution around the central shaft. Thelast revolution is transmitted to the wheel H. The wheel H, it will beseen, makes one revolution to every revolution and a half of the pinionO, which is, in this instance, one-third the size of the wheel H; or, inotherwords, the speed is doubled.

By the use of the pulley 7c the belt f is caused to draw in thedirection of the revolution of the wheel H, thus causing the band towork to better advantage than it would in case this pulley was dispensedwith.

Instead of the counter-balance L of the frame I, another pulley similarto J, and pinion such as J, may be substituted, and a pulley such as kemployed, as shown in Fig. 4.

It is obvious that the pinions, pulleys, and internallygeared wheel maybe of different relative sizes than have been here shown.

The machine above described is complete, and all that it is nownecessary to do is to carry a belt from the wheel H to the machinery tobe driven, unless a still greater speed is desired, in which case thebelt from the wheel H is carried to a pulley, M, on the shaft of asecond machine operating on the same principle as the one justdescribed, the gearing used in this machine being frictional instead oftoothed. I thus get double the speed from the transmitting-wheel of thesecond machine that is gained from the first, and four times as much asfrom the pinion O.

I claim- 1. The combination of the loose pulley turning on the fixedcentral shaft, the loose pulleyframe, also turning on said shaft, theconnected pulley and pinion mounted in said frame and revolved by a beltfrom the pulley on the central shaft, the fast pinion and the loosetransmitting-wheel, bothmounted on said shaft, substantially as setforth.

2. The combination of the stationary pinion on the fixed central shaft,the loose transmittin g-wheel on said shaft, and the pinion meshing withboth the fixed pinion and transmit- Witnesses:

JOE I. PEYTON, BALTIS DE LONG.

